Low-Complexity Optical FFT Scheme Enabling Tbit/s All-Optical OFDM Communication

Conference: Photonische Netze - 11. ITG-Fachtagung
05/03/2010 - 05/04/2010 at Leipzig, Germany

Proceedings: Photonische Netze

Pages: 8Language: englishTyp: PDF

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Hillerkuss, D.; Winter, M.; Teschke, M.; Marculescu, A.; Li, J.; Sigurdsson, G.; Worms, K.; Freude, W.; Leuthold, J. (Karlsruhe Institute of Technology, IPQ, Karlsruhe, Germany)

A practical scheme to perform the fast Fourier transform in the optical domain is introduced. Optical real-time FFT signal processing is done at speeds far beyond the limits of electronic digital processing, and at a negligible energy expenditure. To illustrate the power of the method we demonstrate an optical 400 Gbit/s OFDM receiver. It performs an optical real-time FFT on the consolidated OFDM data stream, thereby demultiplexing the signal into lower bit rate subcarrier tributaries, which can then be processed electronically.